Support | Troubleshooting | Dyson Skip navigation
Thanks. We've saved your preferences.
You can update your contact preferences at any time in the Keep in touch section of Your Dyson. If you have a Your Dyson account, you can log in below to manage your contact options.

Let's get your machine working

DC34 Complete™
DC34 Complete™

Let's get your machine working

DC34 Complete™
See all steps

We're glad the problem's been solved.

Please let us know if there's anything else we can help you with.

The Dyson guarantee

‘How to’ videos and tips

'How to ' videos and tips

To help you get the most from your machine. Quick and easy.
Exclusive owner benefits

Exclusive owner benefits

Priority access to previews of new Dyson technology, events and offers.
Expert advice. 7 days a week.

Expert advice. 7 days a week.

Freephone and live chat. The right advice for your machine, from real Dyson people.
Hassle-free repairs and replacement

Hassle-free repairs and replacement

Free replacement parts or repairs during your guarantee period. And if we can’t repair it, we’ll replace it.

We need a little more information to help us solve your issue.

Please contact our customer service team on 01-475-7109, or directly on Live Chat through our Digital Assistant by clicking the purple icon at the bottom of the page. You can start a conversation with an Expert by clicking the agent icon at the bottom left of the chat window.

We need a little more information to help us solve your issue.

Please contact our customer service team on 01-475-7109, or directly on Live Chat through our Digital Assistant by clicking the purple icon at the bottom of the page. You can start a conversation with an Expert by clicking the agent icon at the bottom left of the chat window.

We're glad the problem's been solved.

Please let us know if there's anything else we can help you with.

The Dyson guarantee

‘How to’ videos and tips

'How to ' videos and tips

To help you get the most from your machine. Quick and easy.
Exclusive owner benefits

Exclusive owner benefits

Priority access to previews of new Dyson technology, events and offers.
Expert advice. 7 days a week.

Expert advice. 7 days a week.

Freephone and live chat. The right advice for your machine, from real Dyson people.
Hassle-free repairs and replacement

Hassle-free repairs and replacement

Free replacement parts or repairs during your guarantee period. And if we can’t repair it, we’ll replace it.

We need a little more information to help us solve your issue.

Please contact our customer service team on 01-475-7109, or directly on Live Chat through our Digital Assistant by clicking the purple icon at the bottom of the page. You can start a conversation with an Expert by clicking the agent icon at the bottom left of the chat window.

We need a little more information to help us solve your issue.

Please contact our customer service team on 01-475-7109, or directly on Live Chat through our Digital Assistant by clicking the purple icon at the bottom of the page. You can start a conversation with an Expert by clicking the agent icon at the bottom left of the chat window.

We need a little more information to help us solve your issue.

Please contact our customer service team on 01-475-7109, or directly on Live Chat through our Digital Assistant by clicking the purple icon at the bottom of the page. You can start a conversation with an Expert by clicking the agent icon at the bottom left of the chat window.

We need a little more information to help us solve your issue.

Please contact our customer service team on 01-475-7109, or directly on Live Chat through our Digital Assistant by clicking the purple icon at the bottom of the page. You can start a conversation with an Expert by clicking the agent icon at the bottom left of the chat window.

We need a little more information to help us solve your issue.

Please contact our customer service team on 01-475-7109, or directly on Live Chat through our Digital Assistant by clicking the purple icon at the bottom of the page. You can start a conversation with an Expert by clicking the agent icon at the bottom left of the chat window.

We need a little more information to help us solve your issue.

Please contact our customer service team on 01-475-7109, or directly on Live Chat through our Digital Assistant by clicking the purple icon at the bottom of the page. You can start a conversation with an Expert by clicking the agent icon at the bottom left of the chat window.

Check the machine

Open the bin base fully by pressing the bin release catch.

                   

Press the catch located behind the bin release catch to separate the bin from the cyclone.

                   

Remove the bin fully from the machine.

                   

Clean the shroud with a cloth or dry brush to remove the fluff and dust.

                   

With the bin removed, check the bin inlet flap for blockages and remove as necessary.

Ensure that it moves freely, fluff or fibres jamming the hinge can cause the flap to close resulting in low suction and pulsating noise.

                   

Check the tools

Inspect all tools to check for blockages and remove any debris as necessary.

                   

Mini motorised head

Using a coin, undo the end cap fastener and remove the Brush bar.

Carefully cut away any hair or fibres from the Brush bar.

                   

Reassemble and test the machine.

                   

Is there anything else we can help with?

Unusual noise

The machine is designed to pulsate. This is an audible feature that indicates a problem, as well as preventing damage to the motor. This is usually caused by a restriction in airflow or a blockage within the machine.

Check the machine

Press the catch located behind the bin release catch to separate the bin from the cyclone.

Press and hold the trigger for 10 seconds.

Has the noise stopped?

Clean the machine

Clean the shroud with a cloth or dry brush to remove the fluff and dust.

                   

Check the tools

Inspect all tools to check for blockages and remove any debris as necessary.

                   

Mini motorised head

Using a coin, undo the end cap fastener and remove the Brush bar.

                   

Carefully cut away any hair or fibres from the Brush bar.

                   

Has this resolved the problem?

Unusual noise

The machine is designed to pulsate. This is an audible feature that indicates a problem, as well as preventing damage to the motor. This is usually caused by a restriction in airflow or a blockage within the machine.

Check the machine

Open the bin base fully by pressing the bin release catch.

                   

Press the catch located behind the bin release catch to separate the bin from the cyclone.

                   

Remove the bin fully from the machine.

                   

Clean the shroud with a cloth or dry brush to remove the fluff and dust.

                   

Check the tools

Inspect all tools to check for blockages and remove any debris as necessary.

                   

Mini motorised head

Using a coin, undo the end cap fastener and remove the Brush bar.

                   

Carefully cut away any hair or fibres from the Brush bar.

                   

Reassemble and test the machine.

                   

Has this resolved the problem?

Wash the filter

The filter needs to be washed at least once per month.

Please follow the steps in the video.

Remove the filter

The filter needs to be washed at least once per month.

Press the filter release catch located on the top of the machine and pull the cyclone away from the Main body.

                   

Wash the filter

Run cold water through the open end of the filter for approximately 10 seconds.

Turn the filter up side down and tap 10 times.

Squeeze and twist the filter.

Repeat until clean.

                   

Dry the filter

Leave the filter in a warm place until completely dry.

                   

Ensure the filter is completely dry before refitting into machine.

                   

Make sure the filter sits correctly between the Main body and cyclone.

                   

Reassemble and test the machine.

                   

Has this resolved the problem?

Check the machine

Open the bin base fully by pressing the bin release catch.

                   

Press the catch located behind the bin release catch to separate the bin from the cyclone.

                   

Remove the bin fully from the machine.

                   

Clean the shroud with a cloth or dry brush to remove the fluff and dust.

                   

Check the tools

Inspect all tools to check for blockages and remove any debris as necessary.

                   

Mini motorised head

Using a coin, undo the end cap fastener and remove the Brush bar.

                   

Carefully cut away any hair or fibres from the Brush bar.

                   

Reassemble and test the machine.

                   

Has this resolved the problem?

Wash the filter

The filter needs to be washed at least once per month.

Please follow the steps in the video.

Remove the filter

The filter needs to be washed at least once per month.

Press the filter release catch located on the top of the machine and pull the cyclone away from the Main body.

                   

Wash the filter

Run cold water through the open end of the filter for approximately 10 seconds.

Turn the filter up side down and tap 10 times.

Squeeze and twist the filter.

Repeat until clean.

                   

Dry the filter

Leave the filter in a warm place until completely dry.

                   

Ensure the filter is completely dry before refitting into machine.

                   

Make sure the filter sits correctly between the Main body and cyclone.

                   

Reassemble and test the machine.

Has this resolved the problem?

Machine working normally

This indicates that there is no issue with the machine.

Please ensure the filter has been washed thoroughly and all the parts are fitted together correctly.

Has this resolved the problem?

Check the machine

Open the bin base fully by pressing the bin release catch.

                   

Press the catch located behind the bin release catch to separate the bin from the cyclone.

                   

Remove the bin fully from the machine.

                   

Clean the shroud with a cloth or dry brush to remove the fluff and dust.

                   

Check the tools

Inspect all tools to check for blockages and remove any debris as necessary.

                   

Mini motorised head

Using a coin, undo the end cap fastener and remove the Brush bar.

                   

Carefully cut away any hair or fibres from the Brush bar.

                   

Reassemble and test the machine.

                   

Has this resolved the problem?

Wash the filter

The filter needs to be washed at least once per month.

Please follow the steps in the video.

Remove the filter

The filter needs to be washed at least once per month.

Press the filter release catch located on the top of the machine and pull the cyclone away from the Main body.

                   

Wash the filter

Run cold water through the open end of the filter for approximately 10 seconds.

Turn the filter up side down and tap 10 times.

Squeeze and twist the filter.

Repeat until clean.

                   

Dry the filter

Leave the filter in a warm place until completely dry.

                   

Ensure the filter is completely dry before refitting into machine.

                   

Make sure the filter sits correctly between the Main body and cyclone.

                   

Reassemble and test the machine.

                   

Has this resolved the problem?

Paper test

This would indicate that there is no issue with the machine. To test that there is not a further blockage, tear up some small pieces of paper and vacuum them.

                   

Are you able to see the pieces of paper in the clear bin?

Machine working normally

This would indicate that the machine is working as intended.

Is there anything else we can help with?

Run time

Your Dyson handheld is designed to give constant suction. Unlike other handhelds, when fully charged DC31/DC34 will give 6 - 10 minutes of powerful constant suction depending on the power mode selected.

The machine will run for 6 minutes on MAX power.

If the run time does not last as stated, please order a new battery.

Is there anything else we can help with?

Serial number location

The serial number can be found on the Main body, behind the filter.

                   

Is there anything else we can help with?

How to attach the accessories

                   

Crevice tool

Slide the crevice tool into the inlet pipe on the cyclone until it ''clicks'' into position.

                   

Combination tool

The brush must be positioned at the back of the combination tool to use the crevice function.

To use the brush function. press the button on the brush section.

Slide the brush section towards the front of the combination tool.

                   

Mini motorised head

Slide the Mini motorised tool into the inlet pipe on the bin until it 'clicks' into position.

                   

Is there anything else we can help with?

Machine is pulsating

The machine is designed to pulsate. This is an audible feature that indicates a problem, as well as preventing damage to the motor. This is usually caused by a restriction in airflow or a blockage within the machine.

If the machine does not have any power, please check the status light and select which light is showing.

Please select the appropriate option

Filter

Make sure the filter sits correctly between the Main body and cyclone.

Check for blockages

Open the bin base fully by pressing the bin release catch.

                   

Press the catch located behind the bin release catch to separate the bin from the cyclone.

                   

Remove the bin fully from the machine.

                   

Clean the shroud with a cloth or dry brush to remove the fluff and dust.

                   

Check the inlet pipe on the cyclone for blockages and remove as necessary.

Check the tools

Inspect all tools to check for blockages and remove any debris as necessary.

                   

Mini motorised head

Using a coin, undo the end cap fastener and remove the Brush bar.

                   

Carefully cut away any hair or fibres from the Brush bar.

                   

Reassemble and test the machine.

                   

Has this resolved the problem?

Removing blockages from the Mini motorised head

Remove the Motorised head from the machine using the release catch on the top of the inlet.

                   

Using a coin, undo the end cap as shown and remove the Brush bar.

                   

Carefully cut away any hair or fibres from the Brush bar.

                   

Reassemble and test the machine.

                   

Has this resolved the problem?

The machine will run for 6 minutes on MAX power.

The machine will run for 10 minutes on standard power.

Has this resolved the problem?

Please select the appropriate option

Damp or musty smell

A damp or musty smell is caused when dust in the cyclone has come into contact with water.

It may not be a direct contact with water, for example when vacuuming pet hair that is slightly damp, this moisture will combine with the dust in the cyclone causing the smell.

Additionally the smell may occur if the filter goes back into the machine wet.

Only the filter can be washed, the bin can be cleaned with a damp cloth only, and both must be completely dry before being refitted to the machine.

Has any part of the machine been washed?

Clean the bin

To ensure your machine continues to clean effectively, the clear bin must be emptied as soon as the dust reaches the MAX mark.

Push the button on the Main body of the machine downwards to release dust directly into a dustbin.

                   

Clean the clear bin with a damp cloth only.

WARNING: Do not use detergents, polishes or air fresheners to clean the clear bin. Do not put the clear bin in a dishwasher.

Refit the bin

Ensure the bin is completely dry before replacing. To replace the bin, push it up and in to the Main body of the machine until it clicks in to place.

                   

Mini motorised head

Using a coin, undo the end cap fastener and remove the Brush bar.

                   

Carefully cut away any hair or fibres from the Brush bar.

                   

Reassemble and test the machine.

Has this resolved the problem?

Were all the washed parts completely dry before the machine was used?

Damp or musty smell still present

Under normal use, any unpleasant smell can only be caused by something the machine has picked up. Please select pick up issues to carry out checks.

If you are able to locate the smell to a part of the machine, replacing the part may help eliminate the smell. For this, please select Part broken.

Please select the appropriate option

Wash the filter

The filter needs to be washed at least once per month.

Please follow the steps in the video.

Remove the filter

The filter needs to be washed at least once per month.

Press the filter release catch located on the top of the machine and pull the cyclone away from the Main body.

                   

Wash the filter

Run cold water through the open end of the filter for approximately 10 seconds.

Turn the filter up side down and tap 10 times.

Squeeze and twist the filter.

Repeat until clean.

                   

Dry the filter

Leave the filter in a warm place until completely dry.

Ensure the filter is completely dry before refitting into machine.

                   

Make sure the filter sits correctly between the Main body and cyclone.

                   

Reassemble and test the machine.

Has this resolved the problem?

Separate the cyclone from the Main body

Remove all tools and accessories from the machine.

                   

Lay the machine on its back, on a firm stable surface, so that bin entry nozzle points towards the ceiling.

Place your hand on the bin and apply pressure downwards.

While applying pressure, press the cyclone release catch.

                   

Has this resolved the problem?

Empty the bin

To ensure your machine continues to clean effectively, the bin must be emptied as soon as the dust reaches the MAX mark.

                   

Push the button on the Main body of the machine downwards to release dust directly into a dustbin.

Shake or tap firmly to remove all dust from inside the fine dust collector.

                   

Press firmly underneath the catch of the clear bin base to close.

Is there anything else we can help with?

Charge the battery

Plug the charger directly in to the machine via the charger cable.

The Battery should be fully charged after 3.5 hours.

                   

Is there anything else we can help with?

Wash the filter

The filter needs to be washed at least once per month.

Please follow the steps in the video.

Is there anything else we can help with?

Remove the filter

The filter needs to be washed at least once per month.

Press the filter release catch located on the top of the machine and pull the cyclone away from the Main body.

                   

Wash the filter

Run cold water through the open end of the filter for approximately 10 seconds.

Turn the filter up side down and tap 10 times.

Squeeze and twist the filter.

Repeat until clean.

                   

Dry the filter

Leave the filter in a warm place until completely dry.

                   

Ensure the filter is completely dry before refitting into machine.

                   

Make sure the filter sits correctly between the Main body and cyclone.

                   

Reassemble and test the machine.

Is there anything else we can help with?

Learn more from your Dyson with the MyDysonᵀᴹ app

Download the MyDysonᵀᴹ app to register.

Enjoy quick access to personalised guides and 24/7 support.